Here is the full list of all 32 Tinker Racers achievements.
Score more than 35000 points
Score more than 30000 points
Set a record in all tracks in Time Attack Mode
Score more than 25000 points
Score more than 20000 points
Win any track of the Office in Campaign Mode with more than 95% of health
Score more than 15000 points
Win any track in Dark Mode
Beat any developers' record in Time Attack Mode
Set a record in Time Attack Mode
Win a track in Simple Race Mode
Finish all tracks of the Office in campaign mode
Win any track of the Office in campaign mode without dying or falling
Score more than 10000 points
Finish all tracks of the Kitchen in campaign mode
Unlock Dark Mode
Win any track of the Kitchen in campaign mode without dying or falling
Score more than 5000 points
Finish all tracks of the Bedroom in campaign mode
5 x 0 win in campaign mode
Finish the Tutorial
Score the first point
Win by breaking a bot
Win any track in Campaign Mode with 2 players
Win any track in Campaign Mode with 3 players
Win any track in Campaign Mode with 4 players
Score more than 40000 points
Score more than 45000 points
Score more than 50000 points
Win any track in Campaign mode with less than 5% of health
Win all tracks in Simple Race Mode
Beat all developers' records in Time Attack Mode